Lock-case



E. PARKE-R. Look Case.

I No. 231,608. Patented-Aug. 24, 1880.

N. PETERS. FMOTALITROGRAFHER. WASHING ON D C UNITEE STATES PATENT OFFICE.

EMERY PARKER, OF NEW BRITAIN, CONNECTICUT.

LOCK-OAS E.

SPECIFICATION forming part of Letters Patent No. 231,608, dated August 24, 18-80,

Application filed'April 21, 1880.

To all whom it may concern:

Be it known that I, EMERY PARKER, of New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvementsin Lock and Latch Cases, (Case 0;) and I do hereby declare that the following is a full, clear, and exact description of the invention, whereby a person skilled in the art can make and use the same, reference being bad to the accompanying drawings, and to the letters of reference marked thereon.

Like letters in the figures indicate the same parts.

My improvement relates to. a new form of lock and latch cases which is intended tosupply the place of the mortise and other locks and latches now in use.

The object of my invention is to provide a case for containing the working parts of a lock or latch, or both combined, which can be more easily attached to doors than the mortiselocks now used, and which will not present the unsightly projection of the rim-lock, and also to provide a lock which can be readily attached to thin doors where mortise-locks cannot be used.

In the accompanyingdrawings, which illustrate my. invention, Figure 1. shows a side view of one of my improved oases containing a latch as applied to a door. Fig. 2 shows an edge view of the same. Fig. 3 shows aview with one of the side plates of the case removed, so as to show the interior parts. Fig. 4 is a cross-section on the line a Z; of Fig. 3.

A is the door. B and C are the side plates of the case. They are made thin and rest against the side faces of the door. They also extend round the edge of the door, where they are intended to join, as shown in Fig. 2.

The plate C is shown in the drawings as being the one to which the working parts of the latch are attached in the ordinary manner. Only the latch-bolt is shown, as the construction ofthe lock or latch mechanism is not a part of my invention.

The two plates B and C are secured together (ModeL) by a post, D, and screw D, and by a cross back plate, E, or in any other convenient manner. The whole case is attached to the door when in place by the screws E E passing into the edge in the customary manner.

The plate C is provided with the rabbet C where the edge of the door shuts against the jamb.

G G are raised flanges upon the side plates, which rest against the wood of the door and help support the lock in place, and also serve to inclose the working parts.

My improved lock-case is attached to the door by simply sawing a piece out to the depth of the look through the'whole thickness of the door and two smaller places for the top and bottom of the edge, inserting the lock, and putting in the screws D and F.

For doors of different thickness itis intended to have cases of various sizes, although it is not necessary to have the two side plates come together on the edge, as shown. One case will answer for several thicknesses of doors.

My invention is equally applicable to locks and latches, and to both combined in the same case, and is also applicable to all kinds of doors to which mortise or rim locks can be attached.

By means of my intention the attachment of the escutcheons for the key-holes and the roses for the knobs is avoided, the metal of the side plates being a suitable finish and protection to the wood.

What I claim as my invention is- A lock-case composed of the plates B and C, adapted to rest against the sides of the door and extend around its front edge, and containing and supporting the working parts of a lock between them within the thickness of the door, said plates overlapping the edges of the hole cut through the door, substantially as described.

EMERY PARKER. Witnesses:

THEO. G. ELLIs,

WENDELL R. CURTIS. 

